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dm zone: Use the bitmap API to allocate bitmaps

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Use bitmap_zalloc()/bitmap_free() instead of hand-writing them.
It is less verbose and it improves the semantic.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
This commit is contained in:
Christophe JAILLET 2023-06-07 05:26:27 +02:00 committed by Mike Snitzer
parent d483001206
commit e118029cb7
1 changed files with 7 additions and 8 deletions
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15
drivers/md/dm-zone.c
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@ -7,6 +7,7 @@
#include <linux/mm.h>
#include <linux/sched/mm.h>
#include <linux/slab.h>
#include <linux/bitmap.h>
#include "dm-core.h"
@ -140,9 +141,9 @@ bool dm_is_zone_write(struct mapped_device *md, struct bio *bio)
void dm_cleanup_zoned_dev(struct mapped_device *md)
{
if (md->disk) {
kfree(md->disk->conv_zones_bitmap);
bitmap_free(md->disk->conv_zones_bitmap);
md->disk->conv_zones_bitmap = NULL;
kfree(md->disk->seq_zones_wlock);
bitmap_free(md->disk->seq_zones_wlock);
md->disk->seq_zones_wlock = NULL;
}
@ -182,9 +183,8 @@ static int dm_zone_revalidate_cb(struct blk_zone *zone, unsigned int idx,
switch (zone->type) {
case BLK_ZONE_TYPE_CONVENTIONAL:
if (!disk->conv_zones_bitmap) {
disk->conv_zones_bitmap =
kcalloc(BITS_TO_LONGS(disk->nr_zones),
sizeof(unsigned long), GFP_NOIO);
disk->conv_zones_bitmap = bitmap_zalloc(disk->nr_zones,
GFP_NOIO);
if (!disk->conv_zones_bitmap)
return -ENOMEM;
}
@ -193,9 +193,8 @@ static int dm_zone_revalidate_cb(struct blk_zone *zone, unsigned int idx,
case BLK_ZONE_TYPE_SEQWRITE_REQ:
case BLK_ZONE_TYPE_SEQWRITE_PREF:
if (!disk->seq_zones_wlock) {
disk->seq_zones_wlock =
kcalloc(BITS_TO_LONGS(disk->nr_zones),
sizeof(unsigned long), GFP_NOIO);
disk->seq_zones_wlock = bitmap_zalloc(disk->nr_zones,
GFP_NOIO);
if (!disk->seq_zones_wlock)
return -ENOMEM;
}